Released: Jan 26, 2026

V8.9.0 での更新項目

機能

• Added Excluding<T>() and Excluding(Type) overloads to exclude all members of a certain type from equivalency comparisons.
• New overloads of BeXmlSerializable and BeDataContractSerializable that allow EquivalencyOptions to be configured, allowing the use of member selection rules.
• Added extensive support for Span<T> / ReadOnlySpan<T> and Be(string) for Span<char> / ReadOnlySpan<char>.
• Added BeEqualTo and NotBeEqualTo to the collection assertions as a more fluent alternative to Equal.
• Added HaveMillisecond and NotHaveMillisecond assertion methods for DateTime and DateTimeOffset.
• BeEquivalentTo will now report the missing or extraneous items for differently sized collections.

不具合の修正

• Fixed a formatting exception when comparing strings containing braces.
• Removed FluentAssertions code from the stack trace when an assertion fails.